How did Liu Bowen cast a spell to subdue the dragon and help Zhu Yuanzhang secure the world?

At the intersection of Dongzhimennei Street and Yonghegong Street in Beijing, there is a landmark called Beixinqiao, and Beijing Metro Line 5 has Beixinqiao Station. Beixinqiao Bridge is called Bridge, but there is actually no bridge, let alone a bridge wing. There is a famous folk legend of Suolongjing here, which is related to Liu Bowen.

How did Liu Bowen cast a spell to subdue the dragon and help Zhu Yuanzhang secure the world?

It is said that after Zhu Yuanzhang established the Great Ming Dynasty, the world was settled. Suddenly, one day, Zhu Yuanzhang had a dream. In the dream, he said that the Dragon King told him to take away the water in Beijing, because years of war made heaven angry.

So Zhu Yuanzhang consulted Liu Bowen and Liu Bowen, the military advisers at that time, and found Yao, who had become a monk at that time. Because he was waterproof, he found that several sea eyes in Beijing led to the sea. One is under the temple in Yuquanshan Town, west of Beijing, one is in Baita Town, Beihai, and the other is in Beixinqiao in Dongzhimen.

Liu Bowen and Yao designed to keep the Dragon King in the sea eye of the North New Bridge, and promised to let the Dragon out when the bridge was old, the wings of the bridge were built and the street lights were not up.

But instead of building a bridge, people built a Wang Yue Temple on the bridge and called this place Beixinqiao, so the old dragon was trapped in the well forever. This is the legendary Liu Bowen, who is proficient in the Book of Changes, performed the spell of "eighteen palms of dragon".